Re: Adopting the Hashlink spec as a work item?

On Thu, 3 Jan 2019 at 20:37, Manu Sporny <msporny@digitalbazaar.com> wrote:

> On 1/2/19 11:12 AM, Melvin Carvalho wrote:
> > +1 looks like an interesting initiative
>
> :)
>
> > Wouldn't one way to mitigate this to be to store the context inline?
>
> Yes, but that usually takes lots and lots of bytes (e.g. schema.org).
> We're storing hundreds of millions of JSON-LD documents in our systems
> and storing the context inline is problematic (leads to 2x-50x bloat in
> storage).
>
> > If I was going to implement this suite in solid I'd probably use
> > turtle, which has this advantage.  (I think this work wants to be
> > compatible with turtle, yes?)
>
> Yes, we want to be compatible, but with the warning that you probably
> don't want to inline the context. Hashlink gives you the best of both
> worlds... it's like inlining the context, but you only use a very tiny
> fraction of the bytes doing so.
>
> > Does solving the use case of 3 different places for the context go
> > away, if you put the context inline?
>
> Yes, it does go away... but you make the storage trade-off above (which
> would be cost prohibitive in medium-to-large production systems).
>
> > Or are there other places that hl: can be used?
>
> Hashlink URLs can be used anywhere a regular URL is used *if* your URL
> resolver understands how to resolve hl: URLs. It's a super simple format
> that takes roughly 1 hour to implement a fully conformant Hashlink URL
> processor.
>

Sounds good!

So basically I think it boils down to this :

When using key value pairs, if you use the full URI as the key, you are
fine as you dont need an external context.

If you are using syntactic sugar such as to say "address" means "
schema.org/address" and that is stored externally then you'll benefit from
this extra integrity check

All sounds good with me.  Just so long as folks realize that this is an
extra pieced that is JSON-LD specific, and with turtle you get it for
free.


>
> -- manu
>
> --
> Manu Sporny (skype: msporny, twitter: manusporny, G+: +Manu Sporny)
> Founder/CEO - Digital Bazaar, Inc.
> blog: Veres One Decentralized Identifier Blockchain Launches
> https://tinyurl.com/veres-one-launches
>
>